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Objective: To investigate the relationship between COMT G675A and MTHFR C677T polymorphisms and hypertension disorders of pregnancy (HDP) in a Mexican mestizo population.
Design And Methods: This case-control study involved 194 HDP and 194 normoevolutive pregnant women. The polymorphisms were genotyped by real time PCR.
Results: Our results showed that the COMT AA genotype increases the risk to HDP (OR: 2.67; 95% CI 1.33-5.35), preeclampsia (OR: 2.69; 95% CI 1.00-7.22) and gestational hypertension (OR: 3.87; 95% CI 1.25-12.0). Furthermore, the double mutant genotype (COMTAA/MTHFRTT) potency the risk to HDP more than two times (OR: 5.21; 95% CI 1.12-24.3, p=0.019).
Conclusion: Our work provides evidence that COMT 675AA genotype is a risk factor for HDP and that this risk is increased by the presence of MTHFR 677TT genotype in a Mexican mestizo population.
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http://dx.doi.org/10.1016/j.preghy.2013.11.002 | DOI Listing |
Biomol Biomed
September 2025
Clinical Research Directorate, Ignacio Chávez National Institute of Cardiology, Mexico City, Mexico.
Rheumatoid arthritis (RA) is a chronic autoimmune disease in which dysregulated interferon regulatory factor 5 (IRF5) may amplify pro-inflammatory pathways; prior genetic studies of IRF5 single-nucleotide variants (SNVs) in RA are inconsistent across populations and have not included mestizo Mexicans or evaluated rs59110799 in RA. We aimed to test whether four IRF5 SNVs (rs2004640G/T, rs2070197T/C, rs10954213G/A, rs59110799G/T) confer susceptibility to RA in women from Central Mexico. In a case-control study of 239 women with RA and 231 female controls (all self-identified Mexican-Mestizos, ≥3 generations), genotyping was performed by real-time PCR with TaqMan® probes; 80% of samples were duplicated (100% concordance) and control genotypes conformed to Hardy-Weinberg equilibrium.
View Article and Find Full Text PDFCornea
September 2025
Instituto de Oftalmologia Fundacion Conde de Valenciana IAP, Mexico City, Mexico City, Mexico.
Purpose: The aim of this study was to describe corneal biomechanical changes in individuals carrying the p.Ala546Asp mutation, compare those with and without visible corneal deposits, and explore their potential relevance for early biomechanical characterization.
Methods: A case series was conducted in a Mexican mestizo family with confirmed molecular diagnosis of granular corneal dystrophy type 2 (GCD2).
Genes (Basel)
August 2025
Red de Inmunonutrición y Genómica Nutricional en las Enfermedades Autoinmunes; Departamento de Neurociencias, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, Jalisco, Mexico.
Background: Hypovitaminosis D has been associated with worse rheumatoid arthritis (RA) manifestations. Notably, different genetic studies have reported that approximately 65% of hypovitaminosis D can be partially explained using the presence of single-nucleotide variants (SNVs) in key genes involved in its metabolism. This study aimed to investigate the association and gene-gene interactions of four SNVs in vitamin D metabolism genes, rs10741657 (), rs10877012 (), rs4809959 ), and rs731236 () with hypovitaminosis D, RA, and its clinical disease activity in a Mexican mestizo population.
View Article and Find Full Text PDFFront Aging Neurosci
July 2025
Instituto de Investigación Científica, Universidad Juárez del Estado de Durango, Durango, Mexico.
Introduction: Parkinson's disease (PD) is a neurodegenerative disorder characterized by motor symptoms such as bradykinesia, rigidity, and tremor. Despite its prevalence, genetic and epigenetic studies in the Mexican Mestizo population (individuals of mixed Indigenous and European-primarily Spanish-ancestry who represent the majority demographic in Mexico) remain limited. DNA methylation may play a role in PD pathogenesis, with peripheral blood methylation patterns serving as potential biomarkers.
View Article and Find Full Text PDFBiomedicines
May 2025
Department of Pharmacology, Faculty of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico.
: across protein-coding genes, single nucleotide allelic variants (SNVs) affect antidiabetic drug pharmacokinetics, thus contributing to interindividual variability in drug response. SNV frequencies vary across different populations. Studying ancestry proportions among SNV genotypes is particularly important for personalising diabetes mellitus type 2 (DMT2) treatment.
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